Buffing-machine.



E. E. 1ERRERS.

BUFFING MACHINE.

APPLIoATIoN FILED AUG. 28,1907.

Patented Feb. 2, 1909.

5 SHEETS-SHEET 1.

THE NaRmS P co., wAsHlNcfaN, D. c.

E. E. PERRERS.

BUFPING MACHINE APPLIOATION FILED A-UG. 28,1907.

Patented Feb. 2, 1.909. f

5 BHEETS--SHEET 2.

`m: nomas Pneus ca., wAsHlNmaN. n. c.

E. E. PERRERS.

BUFFING MACHINE. APPLIoA'rIoN 111.1111 AUG. 28,1907.

Patented Feb. 2, 1909.

' 5 SHEETS-SHEET 4.

l wfg@ use .MH

E. E. PBRRERS.

l BUFFING MAGHINE. APPLIGATION HLED AUG. 28,1907.

Patented Feb. 2, 1909.

5 SHEETS-SHEET 5.

ERNEST Prensas, or Borsato; New votan.

summe-MACHINE'.

iva-911,261. v

specification-0i Letters Patent.

Patented Feb. 2, 1909.

rApplication led August 28.1907. Serial No. 390,452.

To all whom it 'may concern:

Be it known that I-, ERNEST E. Fumeurs,- a citizen of the United States, residing at Buffalo, in the county ofl Erie and State of- New York, have invented a new and use-` ful Improvement in Bi'ifing-Machines, ofwliich the following is a specification.

This invention relates to a buiiing inachine for holding articles and presenting the same to a bu'iiing wheel.

The object of this invention is to provide a machine of this character whereby articles may be buffed or polished expeditiously and thoroughly with a minimum expenditure of power, which can be readily adjusted tof articles of different shapes and sizes and which has a comparatively large range of adjustment soL that articles varying in length can be buifed or polished by the same machine.

In the accompanying drawings consisting of 5 sheets: Figure 1 is a front elevation of my improved bufhng machine. Fig. 2 is an end elevation.' thereof. Fig. 8 is a ,vertical cross section, on an enlarged scale, taken in line 3 3, Fig. 1.

Fig. t is a fragmentary vertical longitudinal section, on an enlarged scale, taken `in line 4*'4, Fig. 2. Figs. 5 and G' arel horizontal sections taken in the correspondingly numbered lines in Fig. 4C. Fig. 7 is a fragmentary top 'plan view of the bufl'ing shaft adjusting arm and adjacent parts. Fig. 8 is a similar view of the locking device whereby the clamp at the end of the" shell or blank is held in place.

Similar letters of reference indicate corresponding parts throughout the several views. j

Although the main frame of the machine may be of any suitable construction that shown in the drawings is preferred and consists of two upright end pieces or standards A, A and upper and lower pairs of horizontal longitudinal tie bars a, a, a1, al connecting the upper and lower parts of the standards.

Arranged lengthwise above the upper ends of the standards is a table B which is pivotally supported so as to be capable of oscillating in a vertical plane transversely of the main frame bymeans of two supporting arms b depending from the underside of the table within the main frame and pivoted at their lower ends on a longitudinalv horizontal rod olf secured to the lower parts of the standard. Y

The table may bei adjusted transversely and is yieldingly held against forward movement after adjustment by means of a horizontal adjusting rod C arranged transversely belowT the table, a bracket c secured to the upper front tie barrand provided with a bearing c1 in which the front part of the adjusting rod is journaled, ya hand wheel c2 Secured to the front end of the adjusting rod and engaging with the front side of the bearing c1, a spiral springD surrounding said rod and engaging at its front end with the rear side of the bearing c1, a screw nut d engaging with the threaded rear end of the adjusting rrod and with the rear end of the snrinO' D-and a bifurcated hanger E de- 1. .n C

pending from the underside of the table and provided in the lower ends of its arms or branches with trunnion screws e which engageA with horizontally opposite sides of the screw nut CZ, as shown in Figs. 3-6. Upon turning the adjusting rod C in one direction the screw nut d, the table connected therewith and the parts mounted on the latter will be moved forwardly and the spring D will be compressed, while upon turning the rod in the opposite direction the table and Y the parts `connected therewith will be moved 'rearwardly transversely of the frame or niachine owing to the expansion of the spring D which holds the hand wheel c2 against the front side of the bearing 01.

Upon the table is arranged a longitudinally and horizontally movable slide or carriage F. The connectionl between this slide and the table is preferably effected by means of a dove-tail sliding joint f, as shown in Fig. 3. yThe slide may be adjustedr lengthwise of the table and held in its adjusted position togetlierwith the parts mounted thereonby various means, that shown in Figs. 3 and 4f for example, being suitable for this purpose and consisting of a horizontal longitudinal adjusting rod G journaled in a bearing g on the slide but` held against axial movement therein, a hand wheel g1 secured to the rod G, and a screw nut g2 secured to thev underside of the slide and receiving the threaded portion ofthe rod.

Mounted upon this slide Iis a turret H which is capable of moving lengthwise with the vslide andalso capable of rotating in a horizontal plaine independently thereof. The

pivotal connection between the slide and turret for this purpose preferably consists of an upright cylindrical post Zt arranged on the upperside of the slide and entering a correspondingly shaped socket Ztl on the underside of the turret. The turret is rotated about its pivot and held in different positions relatively to the silde by means of a worm wheel h2 secured to the outer side of the socket, a worm shaft/z3 journaled transversely on the slide, a worm h4 arranged on the shaft and meshing with the worm wheel and a hand wheel h5 secured to the front end of the worm shaft for manipulating the same.

I, I1 represent the front or auxiliary and rear or main sections of the butling shaft which -is'mounted horizontally and lengthwise in the upper part of the turret so as to be capable of both a longitudinally reciprocating and also a rotary motion relatively thereto.

The mechanism for driving the shaft is operatively connected with the rear end of its rear section and is preferably constructed as follows:

J represents a rear rotatable sleeve which receives the rear portion of the rear section I1 of the bufling shaft and is journaled in a bearing arranged at the rear end of the turret. This sleeve is held against axial movement in its bearings preferably by means of a bevel gear wheel jl arranged on its rear portion and engaging with the rear end of the bearing j and a collar y'2 secured to the sleeve and engaging with the front end of said bearing. The rear section of the batting shaft is connected with this sleeve by means of a spline js which compels said shaft to turn with the sleeve but permits the same to slide lengthwise independent of the sleeve.

K represents a driving shaft which is journaled horizontally in overhead bearings Zo, 7c and provided with fast and loose pulleys Zal, k2. Means are provided for transmitting motion from the driving shaft to the butling shaft which permit of turning the turret on the slide, moving the slide lengthwise on the table and rocking the table transversely relatively to the frame within certain limits for adjusting the machine according to the character of the work which is being buffed without disturbing the operation of the driving mechanism. Various forms of transmitting devices may be employed for accomplishing this purpose, that shown in the drawing consisting of an upright upper shaft section Z provided with a bevel gear wheel Z1 which meshes with a bevel pinion Z2 on the driving shaft K, a lower upright shaft section m journaled in a bearing m1 on the upper rear part of the turret and provided with a bevel pinion m2 which meshes with the bevel gear wheel jl,

an intermediate shaft section and universal couplings a, nl connecting the upper and lower ends of the intermediate shaft section with the upper and lower shaft sections, respectively, as shown in Figs. 1 4.

The bevel gear wheel Z1 is journaled in a bearing 0 formed in a bracket 01 which depends from the adjacent bearing of the driving shaft but is held against movement lengthwise in its bearing and the upper shaft section Z isconnected by a spline 02 with the bore of said bevel gear wheel Z1, so that it is free to slide lengthwise therein but is compelled to turn therewith.

Upon moving the table, slide and turret into different positions the universal joints or couplings a, nl permit the requisite lateral movement of these parts and the sliding or telescopic connection between the upper shaft section and the bevel gear wheel Z1 permits the necessary elongation or contraction of the transmitting gearing.

The front part of the rear bufling shaft section is journaled in an intermediate or main bearing sleeve P which is compelled to move lengthwise with this shaft by means of shoulders or collars p, p1 secured to this shaft section and bearing against the front and rear ends of the intermediate bearing sleeve, as shown in Figs. 4 and 5. The intermediate bearing sleeve is capable of sliding lengthwise in a socket- Q at the front end of the turret but is prevented from turning therein by one or more splines g, as shown in Fig. 5.

The front butting shaft section I is arranged lengthwise in front of the rear builing shaft section and is connected therewith by a-universal coupling or joint r with the front end of the rear bufiing shaft section 105 and at its front end the same is provided with a mandrel or holder S upon which the hollow shell, blank or article s to be buifed is mounted. The central portion of the front butling shaft-section is.journaled in an 110 auxiliary or front bearing sleeve .91 and the latter is mounted on the front end of a horizontally swinging adjusting or supporting arm T which is pivotally supported at its rear end on the intermediate sleeve P. 115 The preferred means of pivotally connecting the front sleeve or bearing 81 with the supporting arm T consists of upper and lower vertical pivot screws u, al arranged on the front part of the adjusting arm T and 120 engaging with seats formed on the upper and lower sides of the front bearing sleeve, thereby forming trunnions which permit this sleeve and the supporting arm to turn horizontally one relatively to the other. 125 Upon turning the front sleeve S1 laterally relatively to the intermediate sleeve P, the front section of the bulling shaft is constantly pressed rearwardly so as to hold the parts of the universal coupling r in proper 130 engagement with each other by means of a spring R surrounding the rear part of the front shaft section I and bearing at opposite ends against the rear end of the front sleeve S1 and a shoulder formed on the front section of the universal coupling r.

The pivotal connection between the adjusting or supporting arm'rl` and the intermediate batting shaft sleeve P is preferably effected by means of a supporting head or bracket V secured to the front end of the intermediate bearing sleeve and provided at its upper end with a circular head 'U and a cylindrical socket @l arranged at the rear end of the supporting arm and engaging with the head fu. By turning the supporting arm horizontally relatively to the bracket V' t-he front bufting shaft section and the mandrel may be shifted into different angles relatively to the rear bufling shaft section to suit the particular character of the work which is being buffed or polished. The supporting arm may be held in position after adjustment on the bracket V by any suitable or approved means, for instance by a stud bolt o2 secured to the bracket and projecting upwardly through a segmental slot o3 in the socket of the supporting arm and a nut o* applied to said bolt 'and bearing against the upper side of the socket, as shown in Figs. 4t and 7.

W represents the rotary bufting wheel to which the articles to be buifed or polished are presented by this machine. This buffing wheel is supported and rotated in a position adjacent to the mandrel by any suitable means.

lli/Then the article to be polished is of considerable length the mandrel and the buffing shaft are reciprocated lengthwise at the same time that they are rotated so as to subjectthe entire surface of the article to the action of the buiiing wheel. This reciprocating movement may be effected in various ways but preferably by the means shown in Figs. l, 2, a' and 5 and constructed as follows:

X represents a short transverse shaft journaled in a bearing on the rear end of the turret and provided at its rear end with a bevel gear wheel a@ which meshes with a bevel pinion x1 on the rear end of the rear bufling shaft sleeve while its front end is provided with a crank disk m2. On its front side the latter is provided with a crank or wrist pin which preferably consists of a bolt x3 having its head movable radially in a diametrical guideway :r4 on the crank disk and a nut x5 engaging with the bolt and adapted to bear against a washer zo on the guideway, as shown in Figs. l, 2 and 5.

Y, Y1 represent the front and rear sections of a connecting rod which are pivoted respectively to the head of the intermediate buiiing shaft sleeve and the wrist ofl the crank disk. A yielding connection is produced between the opposing ends of the connecting rod sections by means of a cross piece g/ rigidly connected with the rear section and sliding on the front section, a nut or shoulder y1 arrangedon the front section and operating to limit the rearward movement of the cross piece on the front section, and a spring y2 surrounding the front section and bearing with its front and rear ends, respectively, against a shoulder g/S on the front section and the front side of the cross piece, as shown in Figs. 1 and 5.

By this means the article to be polished is not only rotated relatively to the butling wheel but is also reciprocated parallel thereto which combined motion is desirable for lbuiiing articles of considerable length such as the bodies of fire extinguishers or acetylene gas generators. l

When the article to be polished is comparatively short and can be covered by the bufing wheel without the necessity of moving or reciprocating the article parallel with the bufting wheel the wrist is shifted to the center of the crank disk so that the rotary movement of the latter' becomes ineffective and the article is only rotated in contact with the buiing wheel. By adjusting the wrist different distances from the axis of the` crank disk the throw of the same may be regulated according to the required longitudinally reciprocating movement.

lhen the article to be bued is of greater length than the throw of the crank disk so much of the surface of this article is first polished as comes within the range or throw of the crank disk while the slide is at one end of its travel and then by moving this slide to the opposite end of its travel another portion of the surface of said article may be polished equal to the throw of the crank disk so that the maximum length of surface which may be polished without shifting the frame of the machine is equal to the combined throw of the crank disk and the extent of the adjustment of the slide.

After the article to be polished has been placed on the mandrel the same is moved into the proper position relatively to the buiing wheel so that the latter engages the article with just enough friction to do the work properly, any excess friction being undesirable on account of the loss of power which it occasions. When the article is cylindrical the same is presented to the buiiing wheel with its axis parallel to that of the bufhng wheel at which time the buffing shaft sections are axially in line and parallel with the buiting wheel.

lVhen the article to be polished is of a tapering character, the table is adjusted transversely and the supporting arm is adjusted laterally so thatl the front bufling shaft section is arranged at an angle and the side of the tapering article is brought parallel with the axis of the bufting wheel, thereby causing a 4uniform friction on all parts of the surface of such articles when polishing the same. The table and the parts mounted thereon are adjusted by means of the rod C toward the buffing wheel to an extent suiicient to obtain the required frictional contact of the bufiing Wheel with the article. lf the article is provided with beads, projections or other irregular surfaces the same is permitted to yield when engaged by the butiing wheel by reason of the spring D being compressed more or less at such times, thereby preventing the high parts of the article from being bnffed unduly and avoiding undue wear on the buffing wheel and loss of power.

For polishing cupshaped articles such as the rear ends of automobile lamps, the turret is turned so that it stands at an angle to the line of movement of the slide and the front puffing shaft section is adjusted at an angle to the rear buffmg shaft section for bringing such article on the mandrel with its end into proper engagement with the periphery of the buiiing wheel. 'When bufng articles of this kind the spring D yields if the article is pressed too hard against the builing wheel and thereby prevent-s undue friction, wear and loss of power.

l/Vhen articles of cup-shaped character are being polished it is desirable to support the bottom of the same at the front end of the mandrel. The means for this purpose shown in the drawings are constructed as follows Z represents a horizontal supporting rod arranged lengthwise above the buffing shaft and mandrel. The rear portion of this supporting rod is capable of longitudinal adjustment in a socket s arranged at the upper end of a post or arm al, a set screw z2 being arranged on said socket and bearing against the supporting rod for holding the same in its adjusted position. The lower end of the post el may be supported either in a socket a3 formed on the upper side of the supporting arm T or in a socket e4 formed at the front end of the turret and is aeld in either of these sockets by set screws e5, s6. The post 21 is secured in the socket of the arm T when the front section of the buiiing shaft is employed for transmitting motion from the rear buihng shaft section to the mandrel but when the front bufng shaft section and supporting arm are omitq ted and the mandrel is secured directly to the front end of the rear bufting shaft section as sometimes is necessary for bufling certain classes of work then the post al is secured in the socket at of the turret.

e? represents a depending clamping or presser arm provided at its upper end with a hub or sleeve 2B which is hung on the front portion of the supporting rod Z. At its lower end this presser arm is provided with a hollow bolt e9 on which is pivoted a rotary clamping or supporting disk 21. The latter is yielding held in engagement with the bottom of the article to be polished and axially in line therewith by means of a spring all surrounding the supporting rod and bearing at its rear end against the hub of the clamping or presser arm zT and at its front end against a screw nut 212 on the supporting rod Z.

ln order to hold the presser disk in its proper position relatively to the article being polished and prevent the same from moving out of axial alinement therewith the rear end of the hub of the presser arm is provided with one or more radial grooves or recesses which receive corresponding ribs or projections 213 formed on the front side of a locking disk a which is adjustably secured to the supporting rod by means of a set screw a, as shown in Figs. l and 8.

When it is desired to remove a finished article from the mandrel and replace the same by an unlinished one it is only necessary to move the clamping or presser arm forwardly sui'iciently to disengage the clamping or presser disk from the bottom of the article and the hub es from the locking disk el* and then turn the presser arm so as to project upwardly from the supporting rod, as shown by dotted lines in Fig. l. The supporting arm is held' in this last mentioned position by rengagement of the lugs of the presser arm hub in a reversed position with the recesses of the locking disk and the pressure of the spring zu, thereby avoiding interference of the presser arm while substituting an unfinished article on the mandrel for the one which has been finished. After the new article has been applied to the mandrel the presser arm is drawn forwardly to disengage it from the locking disk, then swung downwardly and allowed to move rearwardly under the action of its spring zu with the clamping disk engaging the bottom of the article, and the hub thereof engaging the locking disk. By turning the screw nut 212 forwardly or backwardly the tension of the spring zu may be varied as much as necessary to hold the pressing disk in proper engagement with the bottom of the article.

l claim as my invention l. A. buiiing machine having a table capable of swinging in a vertical plane, a slide capable of horizontal movement on said table, a turret pivoted on the slide, and a mandrel pivotally supported on the turret.

2. A bufiing machine comprising a turretV shaft, .Substantiallyfasfset forthr l 3:; Abuiiingmachine comprising, a turret, orf-support, a buffing. shaft operatively. sup-v ported on said tur-ret ory support, an overhead driving. shaft, and means` forv trans-` mitting'motion from said driving shaft to the buiiing shaft, comprising a sleeve in which saidbuiiingshaft is splined, a bearing on the turret in which said sleeve is journaled but heldagainst axial movement, a bevel gear` wheel arranged on said sleeve, a lower shaft section journaled on the tur.- ret, and a bevel pinion arranged on said lower shaft section and meshing with said gear wheel, substantially as set forth.

Ll. A buiiing machinecomprising a turret or support, a bufling shaft operatively supported on said turret or support, an overhead driving shaft, means for transmitting motion from said` driving shaft to the buffing shaft comprising a sleeve in which said buffing shaft is splined, a bearing on the turret in which said sleeve is journaled but held against axial movement, a bevel gear wheel arranged on said sleeve, a lower shaft section journaled on the turret, a bevel pinion arranged on said lower shaft section and meshing with said gear wheel, an upper shaft section, an intermediate shaft section connected by universal couplings with said upper and lower shaft sections, an upper bevel gear wheel in which said upper shaft section is splined, a bearing in which said upper bevel gear wheel is journaled but held against axial movement, an elevated driving shaft, and an upper bevelpinion arranged on the driving shaft and meshing with the upper bevel gear Wheel, substantially as set forth.

5. A bufling machine comprising a turret or support, a buiiing shaft operatively mounted on said turret or support and composed of two sections, a universal coupling connecting said shaft sections, and a spring operating to move said shaft sections one toward the other for retaining the universal coupling in proper engagement, substantially as set forth.

6. A bufing machine comprising a turret or support, a main bearing sleeve mounted on said turret or support, a horizontally swinging supporting arm pivotally supported on the bearing sleeve, a front bearing sleeve swiveled on said supporting arm, a buffing shaft composed of a main or rear section journaled in said main sleeve, an auxiliary or front section journaled in the auxiliary bearing sleeve and connected with the main section by a universal coupling, and a spring interposed between said auxiliary sleeve and shaft section and operating to hold the parts of the coupling in proper engagement, substantially as set forth.

t @Qmprisna auf extensible- 7- Ahueemahne Comprising@ turret Q11 erinnerte-hating mounted 011, Sadf turret or support so as ,tobe capable. of .both turning about its.All axis..y andl reciprocatingy lengthwise. o .f its axis, a-.crank Adiskj ournaledfl on thefturret orsupport, a connecting rod whereby motion,y is transmitted from', the,r crank disk to said bufhng yshaft for reciproeatingthc same, and an overhead driving mechanism connected' with said buffing shaft` andl crank disk for turningthe same, substantially as set forth.y

S. buifing machine comprising a turret or support, a rearsleevejournaledin a bearing' on', the rear party ofY said turret or support but held against, axial movement therein, an intermediate ormain sleeve slidable.YV lengthwise. inthe. front part of the turret or support but held against turning therein, a buffing4k shaft splined in the rear sleeve andV iournaled-` in the front' sleeveI so that the latter is.,compelled to, moveI axially with the shaft, a lower shaft section having a bevel pinion meshing with a bevel gear wheel on the rear sleevea crank shaft journaled on the turret or support and having a bevel gear wheel which meshes with a bevel pinion on the rear sleeve, and a crank disk arranged on the crank shaft and having a crank pin or wrist which is connected by a rod with the main sleeve, substantially as set forth.

9. A buling machine comprising a turret or support, a rear sleeve journaled in a bearing on the rear part of said` turret or support but held against axial movement therein, an intermediate or main sleeve slidable lengthwise in the front part of the turret or support but held against turning therein, a bufling shaft splined in the rear sleeve and journaled in the front sleeve so that the latter is compelled to move axially with the shaft, a lower shaft section having a bevel pinion meshing with a bevel gear wheel on the rear sleeve, a crank shaft journaled on the turret or support and having a bevel gear wheel which meshes with a bevel pinion on the rear sleeve, a crank disk arranged on the crank shaft and having a crank pin, a rod composed of front and rear sections which are connected, respectively, with the front sleeve and crank pin, and a yielding connection between said rod sections, substantially as set forth.

10. A buiiing machine comprising a turret or support, a rear sleeve journaled in a bearing on the rear part of said turret or support but held against axial movement therein, an intermediate or main sleeve slidable lengthwise in the front part of the turret or support but held against turning therein, a bufling shaft splined in the rear sleeve and j ournaled in the front sleeve so that the latter is compelled to move axially with the shaft, a lower shaft section having a bevel pinion meshing with a bevel gear wheel Ion the rear sleeve, a crank shaft journaled on the turret or support and having a bevel gear Wheel which meshes with a bevel pinion on the rear sleeve, a crank disk arranged on the crank shaft and having a crank pin, a rod composed of front and rear sections which are connected, respectively, with the front sleeve and crank lpin, a cross piece secured to the rear rod section and slidable on the front rod section, a stop arranged on the front rod section in the rear end of said cross piece, and a spring arranged between a shoulder on the front rod section and the front end of said cross piece, substantially as set forth. l

ll. A bufling machine comprising a longitudinally and transversely movable support, a buliing shaft operatively mounted in said support and adapted to carry a mandrel which receives the article to be polished, a supporting rod arranged lengthwise of the buing shaft, a post mounted on said supe port and having a socket which receives the supporting rod, a clamping arm having a hub turning on said rod, a clamping disk journaled on said arm and adapted to bear against the end of the article on the mandrel, a locking disk arranged on said rod and adapted to interlock with said hub for holding said arm against rotation on said rod, and a spring arranged on said rod between `said hub and a screw nut on the rod. and

operating t0 hold said hub and clamping disk yieldingly in engagement with said locking disk and article, substantially as set forth.

Witness my hand this 23rd day of August, 1907.

ERNEST E. PERRERS.

Witnesses:

THEO. L. Porr, E. M. GRAHAM. 

